Nest thermostats notifications are late, missing or excessive

The checks in more detail

If an alert never arrives, check the thermostat is online, since an offline thermostat cannot send alerts, and check power and battery. On the phone, switch off Do Not Disturb, let the Home app through and lift any battery limits on it. If alerts are too many, adjust which ones you enable. Alerts about equipment error mean look at the thermostat itself, where the settings icon shows an exclamation point. An alert that repeats after you dismissed it means the problem persists, and E help codes cannot be dismissed until the issue is fixed.

If notifications go to the wrong person, check who is a member of the home and each person's settings. Trigger a test by changing the temperature and watch the app, since it confirms the thermostat can talk to the app. When one phone gets the alerts and another does not, look at the second phone's settings. Share the alerts with a second person so one phone being away does not mean nobody hears.

Give the thermostat a test alert on a day you are at home, since checking during a real problem, when you are worried about comfort, is a poor time to learn that alerts are off. Tell everyone in the household what the common alerts mean, since a low battery or No power message that goes unread for a week is how a small wiring problem becomes a cold house. An alert about equipment errors is a reason to look at the thermostat itself, since Google notes an exclamation mark on the settings icon marks an equipment error that the app may only summarize.